I'm not a pilot but I'm been in an around helos flown with NVG's. In short, NVG's are the cause of a lot of accidents. Flying helo's low at night is a dangerous job and requires a lot of training for the crews. Adding darkness and NVG's with tunnel vision and distorted depth perception requires an enormous amount of training..add enemy activity and you see the pattern..
I cannot believe this KA-50 was considered a cutting edge attack helo with no FLIR/Thermal Imager targeting capability..thats insane..